collectedfromBraindumps(1)
添加时间: 2007-9-3 22:21:03 作者: Cisco认证考试 阅读次数:24 来源: http://www.d9soft.com
The five steps of Encapsulation:
1) User information is converted to data.
2) Data is converted to segments.
3) Segments are converted to packets or datagrams.
4) Packets or datagrams are converted to frames.
5) Frames are converted to bits.
What kind of services are provided by the Presentation layer ?
JPEG, TIFF, PICT, EBCDIC to ASCII, MIDI, MPEG, QuickTime
What kind of services are provided by the Session layer ?
NFS, SQL, RPC, X Windows, ASP, DNA SCP
How to enable a Banner on a Cisco Router ?
Router(Config#) banner motd #
What are the three ways to display IPX interface e0 ?
sh ipx int e0
sh ipx interface e0
sh ipx interface ethernet0
What are the three ways to modify your running-configuration file ?
???
What s the default subnet mask for Class A, B and C IP adresses ?
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0
Which IP-class provides the least number of Hosts?
Class C
How to define access-list commands ?
wrong: Router(config-if)# access-list 1 permit 172.16.20.1 0.0.0.0
right: Router(config) # access-list 1 permit 172.16.20.1 0.0.0.0
The access list will be defined at global level, not at the interface level. It’s a small but important detail. The access group command will be defined at interface level:
Router(config) # int e0
Router(config-if) # access-group 1 out
What are the access-list ranges of IP (standard and extended) ?
1-99 IP standard access list
100-199 IP extended access list
know also:
600-699 Appletalk access list
800-899 IPX standard access list
900-999 IPX extended access list
1000-1099 IPX SAP access list
What happens to a packet which receives the end of an access list ?
There is an implicit deny any at the end of an access list. So if the packet is not allowed, it will be dropped.
Which command is used to view the access-list on serial0 interface ?
show access-lists s0
How many access-lists are possible on an interface per protocol ?
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